Working with Galata Notebook Toolbar Items

I’m trying to reliably call a notebook toolbar item in Galata. In a clean / controlled environment, with known items in a notebook toolbar, I can get by using getToolbarItemByIndex(itemIndex: number), but I note the existence of getToolbarItem( itemId: galata.NotebookToolbarItemId).

But what does the itemId relate to? Is there an easy way, in a test script, of console logging the itemIds available in a particular notebook, or otherwise inspecting them?